Abstract
Radiographic Test (RT) has been widely used in industries to detect inner defects of welded structures or any other significant components. Especially in the nuclear industry, film radiography is the dominant and standardized procedure in performing radiographic testing. Lately emphasis is on digital radiography. One of the most serious concerns for digitization is the lack of image resolution standardizing device like resolution gauge which would determine imaging parameters such as modular transfer function (MTF). This paper proposes line pair type image quality indicator (IQI) corresponding to the current IQIs for both hole and wire type. The advantage of this IQI is to enable easier calibration of testing conditions and quantification of digital RT image quality with required MTF that should be clearly defined in the examination procedures. Furthermore, to acquire "resolution-ensured" digital image of existing RT films, we developed line pair type standardization film. Prototypes of line pair type IQI and line pair type standardization film are currently in the validation study and trial implementing process. These results are also reported in this paper.
| Original language | English |
|---|---|
| Title of host publication | American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP |
| Pages | 453-456 |
| Number of pages | 4 |
| Volume | 1 |
| DOIs | |
| Publication status | Published - 2008 |
| Externally published | Yes |
| Event | 2007 ASME Pressure Vessels and Piping Conference, PVP 2007 - San Antonio, TX, United States Duration: 2007 Jul 22 → 2007 Jul 26 |
Other
| Other | 2007 ASME Pressure Vessels and Piping Conference, PVP 2007 |
|---|---|
| Country | United States |
| City | San Antonio, TX |
| Period | 07/7/22 → 07/7/26 |
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ASJC Scopus subject areas
- Mechanical Engineering
- Industrial and Manufacturing Engineering
Cite this
New IQI for digital radiography. / Mori, Masako; Kashiwa, Toshibumi; Aoki, Yoshimitsu.
American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 1 2008. p. 453-456.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - New IQI for digital radiography
AU - Mori, Masako
AU - Kashiwa, Toshibumi
AU - Aoki, Yoshimitsu
PY - 2008
Y1 - 2008
N2 - Radiographic Test (RT) has been widely used in industries to detect inner defects of welded structures or any other significant components. Especially in the nuclear industry, film radiography is the dominant and standardized procedure in performing radiographic testing. Lately emphasis is on digital radiography. One of the most serious concerns for digitization is the lack of image resolution standardizing device like resolution gauge which would determine imaging parameters such as modular transfer function (MTF). This paper proposes line pair type image quality indicator (IQI) corresponding to the current IQIs for both hole and wire type. The advantage of this IQI is to enable easier calibration of testing conditions and quantification of digital RT image quality with required MTF that should be clearly defined in the examination procedures. Furthermore, to acquire "resolution-ensured" digital image of existing RT films, we developed line pair type standardization film. Prototypes of line pair type IQI and line pair type standardization film are currently in the validation study and trial implementing process. These results are also reported in this paper.
AB - Radiographic Test (RT) has been widely used in industries to detect inner defects of welded structures or any other significant components. Especially in the nuclear industry, film radiography is the dominant and standardized procedure in performing radiographic testing. Lately emphasis is on digital radiography. One of the most serious concerns for digitization is the lack of image resolution standardizing device like resolution gauge which would determine imaging parameters such as modular transfer function (MTF). This paper proposes line pair type image quality indicator (IQI) corresponding to the current IQIs for both hole and wire type. The advantage of this IQI is to enable easier calibration of testing conditions and quantification of digital RT image quality with required MTF that should be clearly defined in the examination procedures. Furthermore, to acquire "resolution-ensured" digital image of existing RT films, we developed line pair type standardization film. Prototypes of line pair type IQI and line pair type standardization film are currently in the validation study and trial implementing process. These results are also reported in this paper.
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UR - http://www.scopus.com/inward/citedby.url?scp=43449086120&partnerID=8YFLogxK
U2 - 10.1115/PVP2007-26188
DO - 10.1115/PVP2007-26188
M3 - Conference contribution
SN - 0791842797
SN - 9780791842799
VL - 1
SP - 453
EP - 456
BT - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
ER -